These pieces are made of either celluloid or fiber board. All but two have text on the reverse where a name or name and address can be entered although there are no inscriptions. Smallest pieces are 1-5/8" ovals while the largest piece is a 2.5" tall rectangle. All but the calendar carry a tiny hole for a chain. First is for American Airlines, next Pan American World Airways, next PAA, next Western Air Lines, a different one for Western that includes "25th Year." Next for "The Mercury/American Airlines." Next is celluloid calendar for "Avianca." Text is in Spanish and the calendar on the back is effective from 1946 through 1967. Last and most recent of the pieces is "I Flew United." All are NM and display Mint.